<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>4.超链接.html</title>
</head>
<body>

	<!-- 超链接 -->
	<a href="www.baidu.com" target="_self">百度</a>
	<a href="www.baidu.com" target="_self">百度_self</a>
	<a href="www.baidu.com" target="_blank">百度_blank</a>
</body>
</html>